docs: def _check_children(self):
          '''
          Check all of the child processes are still running
          '''
          while self.up:
              time.sleep(1)
              for process in self._processes:
                  if process.is_alive() is True:
                      continue
                  log.debug('%s is dead. Stopping the napalm-logs engine.', process.description)
                  self.stop_engine()